<template>
  <el-card class="box-card">
    <!-- 卡片顶部添加品牌按钮 -->
    <el-button type="primary" size="default" icon="Plus" @click="addTrademark" v-has="`btn.Trademark.add`">添加品牌</el-button>
    <!-- 表格组件，用于展示已有的数据 -->
    <!-- 
      table
      ---border:是否有纵向的边框
      table-column
      ---lable：某一个列表
      ---width：设置这一列的宽度
      ---align：设置这一列对齐方式
      type
     -->
    <el-table style="margin: 10px 0px" border :data="trademarkArr">
      <el-table-column label="序号" width="80px" align="center" type="index"></el-table-column>
      <el-table-column label="品牌名称" prop="tmName">

      </el-table-column>
      <el-table-column label="品牌LOGO">
        <template v-slot="scope">
          <img :src="scope.row.logoUrl" alt="" class="logo">
        </template>
      </el-table-column>
      <el-table-column label="品牌操作">

        <template v-slot="{ row, $index }">
          <el-button type="primary" size="small" icon="Edit" @click="updateTrademark(row)"></el-button>

          <el-popconfirm :title="`您确定要删除${row.tmName}?`" width="250px" icon="Delete" @confirm='removeTradeMark(row.id)'>
            <template #reference>
              <el-button type="primary" size="small" icon="Delete"></el-button>
            </template>
          </el-popconfirm>
        </template>
      </el-table-column>
    </el-table>
    <!-- 分页器组件 -->
    <!-- 
      pagination
      ---v-model:current-page：设置当前分页器页码
      ---v-model:page-size:设置每一也展示数据条数
      ---page-sizes：每页显示个数选择器的选项设置
      ---background:背景颜色
      ---layout：分页器6个子组件布局的调整 "->"把后面的子组件顶到右侧
     -->
    <el-pagination v-model:current-page="pageNo" @size-change="sizeChange" v-model:page-size="limit" :page-sizes="[3, 5, 7, 9]" :background="true" layout=" prev, pager, next, jumper,->,total, sizes," @current-change="getHasTrademark" :total="total" />
  </el-card>

  <el-dialog v-model="dialogFormVisible" :title="trademarkParams.id ? '修改品牌' : '添加品牌'">
    <el-form style="width: 80%;" :model="trademarkParams" :rules="rules" ref="formRef">
      <el-form-item label="品牌名称" label-width="100px" prop="tmName">
        <el-input placeholder="请您输入品牌名称" v-model="trademarkParams.tmName"></el-input>
      </el-form-item>
      <el-form-item label="品牌LOGO" label-width="100px" prop="logoUrl">
        <!-- upload组件属性:action图片上传路径书写/api,代理服务器不发送这次post请求  -->
        <el-upload class="avatar-uploader" action="/api/admin/product/fileUpload" :show-file-list="true" :on-success="handleAvatarSuccess" :before-upload="beforeAvatarUpload">
          <img v-if="trademarkParams.logoUrl" :src="trademarkParams.logoUrl" class="avatar" />
          <el-icon v-else class="avatar-uploader-icon">
            <Plus />
          </el-icon>
        </el-upload>
      </el-form-item>
    </el-form>
    <!-- 具名插槽:footer -->
    <template #footer>
      <el-button type="primary" size="default" @click="cancel">取消</el-button>
      <el-button type="primary" size="default" @click="confirm">确定</el-button>
    </template>
  </el-dialog>
</template>

<script setup lang="ts">
import { reqAddOrUpdateTrademark, reqHasTrademark } from '@/api/product/trademark'
//引入组合式API函数
import { ref, onMounted, reactive } from 'vue'

import type { Records, TradeMarkResponseData, TradeMark } from '@/api/product/trademark/type'
import { ElMessage, UploadProps } from 'element-plus'
import { nextTick } from 'process'
//当前页码
let pageNo = ref<number>(1)
//每一页展示的数据
let limit = ref<number>(3)

//存储已有品牌数据总数
let total = ref<number>(0)
//存储已有品牌的数据
let trademarkArr = ref<any>([])
//当下拉菜单发生变化的时候触发此方法

//控制对话框显示与隐藏
let dialogFormVisible = ref<boolean>(false)

//品牌自定义校验规则方法
const validatorTmName = (rule: any, value: any, callBack: any) => {
  //是当表单元素触发blur时候,会触发此方法
  //自定义校验规则
  if (value.trim().length >= 2) {
    callBack()
  } else {
    //校验未通过返回的错误的提示信息
    callBack(new Error('品牌名称位数大于等于两位'))
  }
}
//品牌LOGO图片的自定义校验规则方法
const validatorLogoUrl = (rule: any, value: any, callBack: any) => {
  //如果图片上传
  if (value) {
    callBack()
  } else {
    callBack(new Error('LOGO图片务必上传'))
  }
}
//表单校验规则对象
const rules = {
  tmName: [
    //required:这个字段务必校验,表单项前面出来五角星
    //trigger:代表触发校验规则时机[blur、change]
    { required: true, trigger: 'blur', validator: validatorTmName }
  ],
  logoUrl: [{ required: true, validator: validatorLogoUrl }]
}

//定义收集新增品牌数据
let trademarkParams = reactive<TradeMark>({
  tmName: '',
  logoUrl: ''
})
let formRef = ref()
//这个自定义事件,分页器组件会将下拉菜单选中数据返回
const sizeChange = () => {
  //当前每一页的数据量发生变化的时候，当前页码归1
  getHasTrademark()
  console.log(123)
}

//修改已有品牌的按钮的回调
//row:row即为当前已有的品牌
const updateTrademark = (row: TradeMark) => {
  //对话框显示
  dialogFormVisible.value = true

  formRef.value.clearValidate('tmName')
  formRef.value.clearValidate('logoUrl')

  //ES6语法合并对象
  Object.assign(trademarkParams, row)
}
//获取已有品牌的接口封装为一个函数:在任何情况下向获取数据,调用次函数即可
const getHasTrademark = async (pager = 1) => {
  //当前页码
  pageNo.value = pager
  let result = await reqHasTrademark(pageNo.value, limit.value)
  console.log(result)
  if (result.code == 200) {
    //存储已有品牌总个数
    total.value = result.data.total
    trademarkArr.value = result.data.records
    console.log(trademarkArr)
  }
}
//添加品牌按钮的回调
//添加品牌按钮的回调

//组件挂载完毕钩子---发一次请求,获取第一页、一页三个已有品牌数据
onMounted(() => {
  getHasTrademark()
})

//上传图片组件->上传图片之前触发的钩子函数
const beforeAvatarUpload: UploadProps['beforeUpload'] = rawFile => {
  //钩子是在图片上传成功之前触发,上传文件之前可以约束文件类型与大小
  //要求:上传文件格式png|jpg|gif 4M
  if (rawFile.type == 'image/png' || rawFile.type == 'image/jpeg' || rawFile.type == 'image/gif') {
    if (rawFile.size / 1024 / 1024 < 4) {
      return true
    } else {
      ElMessage({
        type: 'error',
        message: '上传文件大小小于4M'
      })
      return false
    }
  } else {
    ElMessage({
      type: 'error',
      message: '上传文件格式务必PNG|JPG|GIF'
    })
    return false
  }
} //图片上传成功钩子
const handleAvatarSuccess: UploadProps['onSuccess'] = (response, uploadFile) => {
  //response:即为当前这次上传图片post请求服务器返回的数据
  //收集上传图片的地址,添加一个新的品牌的时候带给服务器
  trademarkParams.logoUrl = response.data
  //图片上传成功,清除掉对应图片校验结果
  formRef.value.clearValidate('logoUrl')
}
//添加品牌按钮的回调
const addTrademark = () => {
  //对话框显示
  dialogFormVisible.value = true
  //清空收集数据
  trademarkParams.id = undefined
  trademarkParams.tmName = ''
  trademarkParams.logoUrl = ''
  formRef.value.clearValidate('tmName')
  formRef.value.clearValidate('logoUrl')
}
const confirm = async () => {
  //在你发请求之前,要对于整个表单进行校验
  //调用这个方法进行全部表单相校验,如果校验全部通过，在执行后面的语法
  await formRef.value.validate()
  let result: any = await reqAddOrUpdateTrademark(trademarkParams)
  //添加|修改已有品牌
  if (result.code == 200) {
    //关闭对话框
    dialogFormVisible.value = false
    //弹出提示信息
    ElMessage({
      type: 'success',
      message: trademarkParams.id ? '修改品牌成功' : '添加品牌成功'
    })
    //再次发请求获取已有全部的品牌数据
    getHasTrademark(trademarkParams.id ? pageNo.value : 1)
  } else {
    //添加品牌失败
    ElMessage({
      type: 'error',
      message: trademarkParams.id ? '修改品牌失败' : '添加品牌失败'
    })
    //关闭对话框
    dialogFormVisible.value = false
  }
}
</script>

<style lang="scss" scoped>
.logo {
  width: 50px;
  height: 50px;
}
.avatar {
  width: 100%;
  height: 100%;
}
.avatar-uploader .el-upload {
  border: 1px dashed var(--el-border-color);
  border-radius: 6px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: var(--el-transition-duration-fast);
}

.avatar-uploader .el-upload:hover {
  border-color: var(--el-color-primary);
}

.el-icon.avatar-uploader-icon {
  font-size: 28px;
  color: #8c939d;
  width: 178px;
  height: 178px;
  text-align: center;
}
.avatar-uploader .avatar {
  width: 178px;
  height: 178px;
  display: block;
}
</style>
